The biggest electric cooker here, for kitchens with a 240 V line and a lot of rice to serve. Smaller kitchens get more for their money from a 60-cup model.
Amazon $549The Hamilton Beach 37590 90-Cup Rice Cooker rates 3.5 among electric cookers commercial rice cookers; the Zojirushi THA-803SA Rice Warmer rates 3.3 among rice warmers ones. The Zojirushi THA-803SA Rice Warmer costs $219.01 less ($329.99 vs $549).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.

A large Zojirushi warmer that holds a full batch through a long service. It lacks the sanitation listing that cheaper warmers carry.
Amazon $329.99Scores side by side
These two sit in different type classes (electric cookers and rice warmers), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | Hamilton Beach 37590 90-Cup Rice Cooker | Zojirushi THA-803SA Rice Warmer |
|---|---|---|
| Overall rating | 3.5/5 | 3.3/5 |
| Value 25% | 39 $6.10 per cooked cup ($549, 90 cups) | 60 $3.75 per cooked cup ($329.99, 88 cups) |
| Capacity 15% | 71 90 cups cooked | 69 88 cups cooked |
| Heating 15% | 39 27.8 W per cooked cup (2,500 W) | 100 holds rice up to 12 hours |
| Listings 20% | 100 listed Conforms to NSF and ETL | 40 listed ETL, no sanitation listing published |
| Features 15% | 80 hinged lid, insulated body, stainless body, keeps warm 8 hours or more, digital controls | 30 stainless body, keeps warm 8 hours or more |
| Warranty 10% | 0 warranty not published, scored as none | 0 6-month warranty |
Specifications
| Hamilton Beach 37590 90-Cup Rice Cooker | Zojirushi THA-803SA Rice Warmer | |
|---|---|---|
| Capacity | ||
| Type | Electric cooker | Warmer only |
| Cooked capacity | 90 cups | 88 cups |
| Pot volume | - | 8 L |
| Keep-warm time | 8 hours | 12 hours |
| Power | ||
| Wattage | 2,500 W | 77 W |
| Voltage | 240 V | 120 V |
| Plug or connection | NEMA 6-15P | - |
| Listings | ||
| Sanitation | Conforms to NSF | - |
| Safety | ETL | ETL |
| Features | ||
| Inner pot | nonstick | nonstick |
| Hinged lid | Yes | - |
| Insulated body | Yes | - |
| Stainless body | Yes | Yes |
| Digital controls | Yes | - |
| Build | ||
| Dimensions | 21.5 x 21.5 x 16.125 | 18 1/8 x 15 x 15 3/8 |
| Warranty | - | 6 months |